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Simulink VLIB: error S-Function does not exist

Hi,
I installed VLIB on Simulink through the installer, if run of block I have this error:
- Win 7_64b
- MatLab R2011b

Error in S-function 'untitled/VLIB_updateEWRMeanS32/simu_VLIB_updateEWRMeanS32': S-Function 'simu_VLIB_updateEWRMeanS32' does not exist
Error in S-function 'untitled/VLIB_mixtureOfGaussiansS32/simu_VLIB_mixtureOfGaussiansS32': S-Function 'simu_VLIB_mixtureOfGaussiansS32' does not exist
Error in S-function 'untitled/VLIB_kalmanFilter_4x6_Predict/simu_VLIB_kalmanFilter_4x6_Predict': S-Function 'simu_VLIB_kalmanFilter_4x6_Predict' does not exist
etc 

How to fix?